RA 602 CA - Rolled Alloys

Creep-Rupture Properties 3
RA 602 CA possesses excellent creep rupture
properties. The relatively high carbon level in the alloy
ensures the precipitation of bulky homogeneously
distributed carbides. Alloying with titanium and
zirconium ensures that these carbides and also
carbonitrides are finely distributed. Even solution
annealing at 1200°C (2192°F) does not completely
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RA 602 CA
dissolve these carbides. As a result, the alloy achieves
its high creep strength through a combination of solid
solution hardening and carbide strengthening.
RA 602 CA has a strength advantage over RA601 at
all temperatures. At temperatures in the 1800-1900°F
(982-1038°C) range and above, RA 602 CA has
equivalent or greater creep rupture properties than
Haynes 230 alloy.
Creep-Rupture Properties, grain size 70 µm or coarser ( ≅ ASTM 4.5 or coarser)
Temperature Average Stress to Rupture, psi Average Stress for 1% Total Creep, psi
°F 1,000 Hrs 10,000 Hrs 100,000 Hrs 1000 Hrs 10,000 Hrs 100,000 Hrs
1200 37,700 31,200 20,300 31,900 26,800 20,900
1400 17,400 11,300 5800 13,900 9400 5400
1600 4600 3200 1750 3500 2380 1300
1700 3600 2180 1100 2230 1520 910
1800 2300 1490 740 1300 960 580
1900 1700 990 485 810 590 320
2000 1250 670 (310) 540 330 (160)
2100 670 440 (200) 260 140 (60)
Temperature Average Stress to Rupture, MPa Average Stress for 1% Total Creep, MPa
°C 1,000 Hrs 10,000 Hrs 100,000 Hrs 1,000 Hrs 10,000 Hrs 100,000 Hrs
650 260 215 140 220 185 120
700 155 100 132 85
750 90 48 75 46
800 42 20 32 16.5
850 26 14 19 9.7
900 18 9.7 2.2 13 7.5
950 13 6.7 8.8 5.4
1000 14.1 9.0 4.5 7.5 5.8 3.4
1050 6.2 3.1 3.6 1.9
1100 7.2 4.4 (2.1) 3.2 1.9 0.85
1150 3.0 (1.4) 1.0 0.40
1200 3.0 1.9 (0.42) 0.97